# Re: \[PATCH 13/18\] exec: make exec path waiting for mmap\_sem killable

- From: Vlastimil Babka \<hidden\>
- Date: 2016-03-11 12:51:30 
- List: linux-arch
- Page: https://ratatoskr.run/linux-arch/2016/03/4707229
- Thread: https://ratatoskr.run/linux-mm/2016/02/4696944/t/2.md

```text
On 02/29/2016 02:26 PM, Michal Hocko wrote:
> From: Michal Hocko <mhocko@suse.com>
>
> setup_arg_pages requires mmap_sem for write. If the waiting task
> gets killed by the oom killer it would block oom_reaper from
> asynchronous address space reclaim and reduce the chances of timely
> OOM resolving. Wait for the lock in the killable mode and return with
> EINTR if the task got killed while waiting. All the callers are already
> handling error path and the fatal signal doesn't need any additional
> treatment.
>
> The same applies to __bprm_mm_init.
>
> Cc: Alexander Viro <viro@zeniv.linux.org.uk>
> Signed-off-by: Michal Hocko <mhocko@suse.com>


Acked-by: Vlastimil Babka <redacted>

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